Mercurial > hg > terminal-chess / file comparison
comparison: src/chess/pawn.c
src/chess/pawn.c
- changeset 47
- d726e4b46c33
- parent 23
- 824c9522ce66
- child 55
- 54ea19938d57
equal
deleted
inserted
replaced
| 46:4dcfb4c58b6d | 47:d726e4b46c33 |
|---|---|
| 69 } | 69 } |
| 70 } | 70 } |
| 71 } | 71 } |
| 72 | 72 |
| 73 _Bool pawn_isblocked(GameState *gamestate, Move *move) { | 73 _Bool pawn_isblocked(GameState *gamestate, Move *move) { |
| 74 return mdst(gamestate->board, move) && !move->capture; | 74 if (move->torow == move->fromrow + 1 || move->torow == move->fromrow - 1) { |
| 75 return mdst(gamestate->board, move) && !move->capture; | |
| 76 } else { | |
| 77 return mdst(gamestate->board, move) || | |
| 78 gamestate->board[(move->fromrow+move->torow)/2][move->tofile]; | |
| 79 } | |
| 75 } | 80 } |
| 76 | |
| 77 int pawn_getlocation(GameState *gamestate, Move *move) { | |
| 78 int8_t d = ((move->piece & COLOR_MASK) == WHITE ? -1 : 1); | |
| 79 | |
| 80 if (move->fromfile == POS_UNSPECIFIED) { | |
| 81 move->fromfile = move->tofile; | |
| 82 } | |
| 83 move->fromrow = move->torow + d; | |
| 84 if (move->fromrow > 6) { | |
| 85 return INVALID_POSITION; | |
| 86 } else { | |
| 87 /* advanced first move */ | |
| 88 if (move->fromrow == (d < 0 ? 2 : 5) && | |
| 89 msrc(gamestate->board,move) != move->piece) { | |
| 90 | |
| 91 move->fromrow += d; | |
| 92 if (move->fromrow > 6) { | |
| 93 return INVALID_POSITION; | |
| 94 } | |
| 95 } | |
| 96 } | |
| 97 return VALID_MOVE_SYNTAX; | |
| 98 } |
